<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>1</title>
    <link rel="stylesheet"href="../css/1.css"/>
</head>
<body>

<ul id="a">
    <li></li>
    <li class="b">
        <div>
            <div class="c"></div>
        </div>
    </li>
</ul>




</body>
</html>